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# Maths year 11

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1. (Original post by RDKGames)
You got the part with right and you know that from what you've shown. You can use this replace the in the original answer.
What shall I do after?

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2. (Original post by z_o_e)
What shall I do after?

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You should really stop asking so much step-by-step otherwise I'm the one doing the question for you. I mean what's the obvious thing to do when you have ...?
3. (Original post by RDKGames)
You should really stop asking so much step-by-step otherwise I'm the one doing the question for you. I mean what's the obvious thing to do when you have ...?
Yeah it just I want to do one step by step with you so I can practise other questions on my own. I picked out the difficult ones. And I'm doing them but I get stuck.
Just got 2 left then ill stop

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4. (Original post by RDKGames)
You should really stop asking so much step-by-step otherwise I'm the one doing the question for you. I mean what's the obvious thing to do when you have ...?
I got 18 + 6 root 5

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5. (Original post by z_o_e)
I got 18 + 6 root 5

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Yeppppp
6. (Original post by RDKGames)
Yeppppp
Sorry if you're annoyed. But I never did a question like this before.

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7. (Original post by z_o_e)
Sorry if you're annoyed. But I never did a question like this before.

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Correct. You know what root 4 is so you can replace that and you're done.
8. (Original post by RDKGames)
Correct. You know what root 4 is so you can replace that and you're done.
So it's5 root 2 / 2?

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9. (Original post by z_o_e)
So it's5 root 2 / 2?

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Yes
10. (Original post by RDKGames)
Yes
Thank you

And I didn't understand this one .

Like I Multiplied it by a positive and negative surd.

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11. (Original post by z_o_e)
Thank you

And I didn't understand this one .

Like I Multiplied it by a positive and negative surd.

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You don't understand it because you've done the method wrong. What you've done is assuming that which is plain wrong.

Multiply out the brackets.
12. (Original post by RDKGames)
You don't understand it because you've done the method wrong. What you've done is assuming that which is plain wrong.

Multiply out the brackets.
What is this type of a question called I'll research a method.

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13. (Original post by z_o_e)
What is this type of a question called I'll research a method.

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Just rationalising the denominator with 2 terms. http://www.mesacc.edu/~scotz47781/ma...m_2_terms.html
14. (Original post by RDKGames)
Just rationalising the denominator with 2 terms. http://www.mesacc.edu/~scotz47781/ma...m_2_terms.html
How's this?

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15. (Original post by z_o_e)
How's this?

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Should be .
16. (Original post by B_9710)
Should be .

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17. (Original post by z_o_e)

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Why did you completely ignore the denominator the change?
18. (Original post by RDKGames)
Why did you completely ignore the denominator the change?
What do you mean?

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19. (Original post by z_o_e)
What do you mean?

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Denominator.

20. (Original post by RDKGames)
Denominator.

I don't understand this.

Can you do this as one question as an example cause I've got others to do like similar ones.

I started rationalising.

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